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Waterproofing basement walls is a great way to reduce the infiltration of moisture into these spaces. But before you apply a sealer, it’s important to remove any efflorescence from the block wall.

A water based efflorescence remover is more effective than scrubbing the surface and requires less work. Once the surface is clean, you can apply a waterproofing sealer to prevent any more water from migrating through the wall.

These tips brought to you by Quikrete Cement and Concrete Products. It’s what America’s Made Of.

I have what looks like a bad case of efflorescence from a cinder block wall. I’m about to follow your advice and both clean the wall and then seal it with your waterproof product. My hesitation comes from the fact that the ‘efflorescence’, if that’s really all it is, has actually slightly damaged the cinder block. There are several soft spots on the wall, and scrubbing those places can cause an indentation of 1/4 ” or more. I can’t see how cleaning and sealing will stop further degradation.
Thoughts?
Thanks!

how do you remove hard water stains (white residue) from concrete or cinder block walls? thanks

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Removing Efflorescence from Concrete Block Walls

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